package com.example.wu.player;

import android.media.MediaPlayer;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;

import java.io.IOException;

public class MainActivity extends AppCompatActivity {
    private Button btnPlay;
    private Button btnPause;
    private Button btnStop;

    private MediaPlayer mediaPlayer = new MediaPlayer();
    private boolean isPause = false;
    private SeekBar seekBar;
    private TextView txtCur;
    private TextView txtTotal;
    private Handler handler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnPlay = findViewById(R.id.btn_play);
        btnPause = findViewById(R.id.btn_pause);
        btnStop = findViewById(R.id.btn_stop);
        seekBar = findViewById(R.id.seekbar);
        txtCur = findViewById(R.id.curTime);
        txtTotal = findViewById(R.id.totalTime);

        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                int progress = seekBar.getProgress();
                int duration = mediaPlayer.getDuration();
                int position = duration * progress / 100;
                mediaPlayer.seekTo(position);
            }
        });

        handler = new Handler(new Handler.Callback() {
            @Override
            public boolean handleMessage(Message message) {
                if (message.what == MODE_MULTI_PROCESS){
                    int position = message.arg1;
                    int duration = message.arg2;
                    txtCur.setText(getTimeStr(position));
                    txtTotal.setText(getTimeStr(duration));
                }
                return false;
            }
        });

        new Thread(new Runnable() {
            @Override
            public void run() {
                while (true){
                    if (mediaPlayer.isPlaying()){
                       int duration = mediaPlayer.getDuration();
                       int position = mediaPlayer.getCurrentPosition();
                       int progress = position * 100 / duration;
                       seekBar.setProgress(progress);

                       Message message = new Message();
                       message.what = MODE_MULTI_PROCESS;
                       message.arg1 = position;
                       message.arg2=duration;
                       handler.sendMessage(message);
                    }

                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();

        btnPlay.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (isPause){
                    mediaPlayer.start();
                    isPause = false;
                }else {
                    //第一次播放或停止后启动
                    mediaPlayer.reset();
                    try {
                        mediaPlayer.setDataSource("/mnt/shared/Other/shangfeng.aac");
                    } catch (IOException e) {
                        e.printStackTrace();
                    }


                mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                    @Override
                    public void onPrepared(MediaPlayer mediaPlayer) {
                        mediaPlayer.start();
                    }
                });
                mediaPlayer.prepareAsync();
                }
            }
        });

        btnPause.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mediaPlayer != null && mediaPlayer.isPlaying()){
                    mediaPlayer.pause();
                    isPause = true;
                }
            }
        });

        btnStop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mediaPlayer != null && mediaPlayer.isPlaying()) {
                    mediaPlayer.stop();
                }
            }
        });
    }
    private String getTimeStr(int time){
        int second = time / 1000;
        int min = second/60;
        second = second % 60;
        StringBuffer buffer = new StringBuffer();
        if (min<10){
            buffer.append("0");
        }

        buffer.append(min);
        buffer.append(":");

        if (second < 10){
            buffer.append("0");
        }
        buffer.append(second);

        return buffer.toString();
    }
}








